Loudspeaker



FIG. 1 is a top, front and side perspective view of a loudspeaker showing my new design;

FIG. 2 is a side elevational view thereof, the remaining sides being identical;

FIG. 3 is a bottom plan view thereof; and,

FIG. 4 is a top plan view thereof. 

The ornamental designs for a loudspeaker, as described and shown. 